Is it still an AoE damage effect only? Try using a search effect instead and apply all filters and area values to that one instead of the damage effect. I think there were some problems using damage effects only. Did you try that yet?

So I'm trying to get the caster of a periodic effect that's in a buff behavior using triggers. The triggering part is no problem, ofc. But it seems like the caster/origin/source unit doesn't get all the way through the effect chain or something. I use the periodic search effect to create an auto-pickup item system without delay that auto-cast abilities have.

I deleted most of the stuff in my map and attached it to this post. Do you know what the problem is? Search for "Pickup" stuff in data and trigger editor. I added debugging triggers already. Use WASD to go to the pickups.

Well you didn't officially title it "FreeCam." In any case it looks a bit different than this library. I mean I'll rename it if I really have to but it seems like a minor detail, especially with that one being from 2010... let me know if that's okay with you. Definitely didn't even know yours existed... you can check the code yourself.